Product Description: ACRYLIC MATERIAL---Inclinometers--This product uses sophisticated mirror acrylic material with crystal clear transparency and over 92% light transmission < p>PERFORMANCE OF IMPORTED OIL --- imported oil, bubbles can be collected within 1 second after impact, placed at minus 20 , 65 , after 12 hours, then return to normal temperature, bubble size is restored ADJUSTABLE EQUIPMENT LEVEL --- Can adjust the level of woodworking measuring tools, adjust the level of machinery and factory equipment, adjust the level of special tools, adjust desk level and other places needing high measurement accuracy A GOOD HELP---Slope Inclinometer Angle Finder--Small body and high precision--a good helper in Your Life MORE ACCURATE ANGLE---Multifunctional Angle Finder Inclinometer--It makes it easier to adjust the level of the objects you frequently use, and the angle is more accurate.